Me and my friend were playing when he fell through the world due to something going wrong, so he quit and tried to reconnect.
Ever since then he cannot, at all, reconnect.
He tries, gets to 1300 ping and "lost connection to host"
we started a new world and he can connect with 500 ping, then loads,and goes down to 90.
We have no idea what to do.
This is not a dedicated server.